The Maine Drug Enforcement Agency said Alex Santiago, 25, was among a group of Massachusetts men who brought heroin to Maine and sold it to local dealers, who would then sell to individuals users.

Santiago was arrested without incident at about 11:30 a.m. Wednesday in a parking lot on Route 1 in Yarmouth, according to a release from MDEA Cmdr. Scott Pelletier. He was charged with aggravated trafficking in heroin, a Class A felony due to a previous conviction for drug trafficking and the amount of heroin involved.

Police estimate the street value of 10 grams of bulk heroin to be $3,000.

According to Pelletier, the heroin ring was identified during a monthlong investigation by the MDEA into the increased presence of heroin in the Brunswick and Sagadahoc County areas. The Massachusetts men allegedly provided the heroin to local dealers, and then stayed at local hotels until they collected the proceeds from the sales before returning to Massachusetts for more heroin.

Santiago remains at Cumberland County Jail, held on $15,000 cash bail.

Pelletier said the investigation continues and additional arrests are expected.